diff --git a/classes/semver.js b/classes/semver.js
index e1208fe6..84e84590 100644
--- a/classes/semver.js
+++ b/classes/semver.js
@@ -291,8 +291,10 @@ class SemVer {
       default:
         throw new Error(`invalid increment argument: ${release}`)
     }
-    this.format()
-    this.raw = this.version
+    this.raw = this.format()
+    if (this.build.length) {
+      this.raw += `+${this.build.join('.')}`
+    }
     return this
   }
 }
diff --git a/test/classes/semver.js b/test/classes/semver.js
index 6be0ac8f..1e4d48f8 100644
--- a/test/classes/semver.js
+++ b/test/classes/semver.js
@@ -90,11 +90,18 @@ test('incrementing', t => {
     id,
     base,
   ]) => t.test(`${version} ${inc} ${id || ''}`.trim(), t => {
-    t.plan(1)
     if (expect === null) {
+      t.plan(1)
       t.throws(() => new SemVer(version, options).inc(inc, id, base))
     } else {
-      t.equal(new SemVer(version, options).inc(inc, id, base).version, expect)
+      t.plan(2)
+      const incremented = new SemVer(version, options).inc(inc, id, base)
+      t.equal(incremented.version, expect)
+      if (incremented.build.length) {
+        t.equal(incremented.raw, `${expect}+${incremented.build.join('.')}`)
+      } else {
+        t.equal(incremented.raw, expect)
+      }
     }
   }))
 })
diff --git a/test/fixtures/increments.js b/test/fixtures/increments.js
index 1fbc4bc9..65e9530b 100644
--- a/test/fixtures/increments.js
+++ b/test/fixtures/increments.js
@@ -123,4 +123,5 @@ module.exports = [
   ['1.2.0-dev', 'preminor', '1.3.0-beta', false, 'beta', false],
   ['1.2.0-dev', 'prepatch', '1.2.1-dev', false, 'dev', false],
   ['1.2.0', 'prerelease', null, false, '', false],
+  ['1.0.0-rc.1+build.4', 'prerelease', '1.0.0-rc.2', 'rc', false],
 ]
diff --git a/test/functions/inc.js b/test/functions/inc.js
index e2d0768c..2f6f9bb4 100644
--- a/test/functions/inc.js
+++ b/test/functions/inc.js
@@ -14,7 +14,15 @@ test('increment versions test', (t) => {
     if (wanted) {
       parsed.inc(what, id, base)
       t.equal(parsed.version, wanted, `${cmd} object version updated`)
-      t.equal(parsed.raw, wanted, `${cmd} object raw field updated`)
+      if (parsed.build.length) {
+        t.equal(
+          parsed.raw,
+          `${wanted}+${parsed.build.join('.')}`,
+          `${cmd} object raw field updated with build`
+        )
+      } else {
+        t.equal(parsed.raw, wanted, `${cmd} object raw field updated`)
+      }
 
       const preIncObject = JSON.stringify(parsedAsInput)
       inc(parsedAsInput, what, options, id, base)